LS1TECH - Camaro and Firebird Forum Discussion
LS1-LS2-LS3-LS6-LS7 PERFORMANCE
Generation III Internal Engine
Help calculating DCR

Generation III Internal Engine 1997-2006 LS1 | LS6

Sponsored by:

Help calculating DCR

Reply Subscribe

Search this Thread

Old

Feb 7, 2011 | 03:34 PM

#1

Thread Starter

12 Second Club

iTrader: (5)

Joined: Jun 2004

Posts: 567

Likes: 0

From: Chicago Suburb

Default

Help calculating DCR

Can someone help me calculate my DCR. There was a nice thread that I used but the link no longer works.

I have a stock LS1 with a Speed Inc SI5 cam: 231/237 .589/.595 112+4.

I want to put PRC LS6 stage 2.5 heads on.

Assuming 0.058 head gasket thickness what will my DCR be with:

59cc
60cc
61cc
62cc

Thanks in advance!!!

Old

Feb 7, 2011 | 03:42 PM

#2

TECH Senior Member

Joined: Mar 2004

Posts: 14,620

Likes: 17

From: BFE

Default

need the .006 lift duration values

Old

Feb 7, 2011 | 03:46 PM

#3

Thread Starter

12 Second Club

iTrader: (5)

Joined: Jun 2004

Posts: 567

Likes: 0

From: Chicago Suburb

Default

Shoot. That link I used to use had all that info in it. Let me get it. It's a comp profile.

Old

Feb 7, 2011 | 03:51 PM

#4

Thread Starter

12 Second Club

iTrader: (5)

Joined: Jun 2004

Posts: 567

Likes: 0

From: Chicago Suburb

Default

I got the cam card:

Duration at .006 is 279 Intake and 285 Exhaust

Card say intake valve closes at 43 ABDC

Old

Feb 7, 2011 | 04:01 PM

#5

TECH Senior Member

Joined: Mar 2004

Posts: 14,620

Likes: 17

From: BFE

Default

Quote:

Originally Posted by Dragula

Can someone help me calculate my DCR. There was a nice thread that I used but the link no longer works.

I have a stock LS1 with a Speed Inc SI5 cam: 231/237 .589/.595 112+4.

I want to put PRC LS6 stage 2.5 heads on.

Assuming 0.058 head gasket thickness what will my DCR be with:

59cc >8.76
60cc >8.65
61cc >8.54
62cc >8.43
Thanks in advance!!!

In red

Old

Feb 7, 2011 | 05:39 PM

#6

Thread Starter

12 Second Club

iTrader: (5)

Joined: Jun 2004

Posts: 567

Likes: 0

From: Chicago Suburb

Default

Thanks!!!

Reply Subscribe

231, 237, 25, 589, 595, calculate, calculating, cam, comp, dcr, duration, heads, lift, ls1, ls6, prc, properly, si5, stock

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 07:45 PM.